Touch display device

ABSTRACT

The present disclosure provides a touch display device including a substrate, a light-emitting component, a first insulating layer, a touch part, a first transmission part, a first conductive connection structure and a second transmission part. The light-emitting component is disposed above the substrate. The first insulating layer is disposed above the light-emitting component. The touch part is disposed above the first insulating layer. The first transmission part is disposed above the substrate, wherein the first transmission part is electrically connected to the touch part. The first conductive connection structure penetrates through the first insulating layer. The second transmission part is disposed below the first transmission part, wherein the first transmission part is electrically connected to the second transmission part via the first conductive connection structure.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a divisional application of and claims the prioritybenefit of U.S. application Ser. No. 16/795,543, filed on Feb. 19, 2020,now allowed. The prior U.S. application Ser. No. 16/795,543 is acontinuation application of and claims the priority benefit of U.S.application Ser. No. 15/846,239, filed on Dec. 19, 2017, now patented.The prior application Ser. No. 15/846,239 claims the priority benefit ofChina application serial no. 201710019694.7, filed on Jan. 11, 2017. Theentirety of each of the above-mentioned patent applications is herebyincorporated by reference herein and made a part of this specification.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present embodiment relates to a touch display device, and inparticular to a touch display device comprising a light-emittingcomponent.

2. Description of Related Art

In recent years, with the rapid development of various applications suchas information technology, wireless mobile communication and informationappliances, in order to achieve more convenience, smaller volume andmore user friendliness, the input devices of a lot of informationproducts have been changed from traditional keyboards, mouses, and thelike into touch display devices. A common touch display device canrealize integration of a touch function and a display function byrespectively manufacturing a display panel and a touch panel, and thenfitting or assembling the display panel and the touch panel together.However, the volume of a touch display device manufactured in this waycannot be reduced, with the result that the device does not meet theneed of the market of electronic products. Hence, technologies forintegrating a touch component on a display panel have already beenpresented.

SUMMARY OF THE INVENTION

According to some embodiments, a touch display device comprises asubstrate, a light-emitting component, a first insulating layer, a touchpart, a first transmission part, a first conductive connection structureand a second transmission part. The substrate includes a display areaand a peripheral area. The light-emitting component is disposed abovethe substrate and within the display area. The first insulating layer isdisposed above the light-emitting component and within the display areaand the peripheral area. The touch part is disposed above the firstinsulating layer and within the display area. The first transmissionpart is disposed above the substrate and within the peripheral area,wherein the first transmission part is electrically connected to thetouch part. The first conductive connection structure penetrates throughthe first insulating layer. The second transmission part is disposedbelow the first transmission part and within the peripheral area,wherein the first transmission part is electrically connected to thesecond transmission part via the first conductive connection structure.

Based on the foregoing, in the touch display device of the embodimentsof the present disclosure, the touch part and the light-emittingcomponent are disposed on the same substrate, thus achieving integrationof touch function and display function.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are included to provide a furtherunderstanding of the present disclosure, and are incorporated in andconstitute a part of this specification. The accompanying drawingsillustrate embodiments of the present disclosure and, together with thedescription, serve to explain the principles of the present disclosure.

FIG. 1A is a schematic diagram showing a local top view of a touchdisplay device according to a first embodiment of the presentdisclosure.

FIG. 1B is a schematic diagram showing a cross-section of the touchdisplay device of FIG. 1A taken along a line I-I.

FIG. 1C is a schematic diagram showing an alternative example of thecross-section of the touch display device in FIG. 1A, wherein microlight-emitting diodes serve as a light-emitting component in a dottedframe C.

FIG. 2 is a schematic diagram showing a cross-section of an alternativeexample of the touch display device according to the first embodiment ofthe present disclosure.

FIG. 3A, FIG. 3B and FIG. 3C are schematic diagrams showing thecross-sections of a touch display device according to a secondembodiment of the present disclosure.

FIG. 4 is a schematic diagram showing a cross-section of an alternativeexample of the touch display device according to the second embodimentof the present disclosure.

FIG. 5 is a schematic diagram showing a cross-section of a touch displaydevice according to a third embodiment of the present disclosure.

FIG. 6 is a schematic diagram showing a cross-section of an alternativeexample of the touch display device according to the third embodiment ofthe present disclosure.

FIG. 7 is a schematic diagram showing a cross-section of a touch displaydevice according to a fourth embodiment of the present disclosure.

FIG. 8 is a schematic diagram showing a cross-section of an alternativeexample of the touch display device according to the fourth embodimentof the present disclosure.

FIG. 9 is a schematic diagram showing a cross-section of a touch displaydevice according to a fifth embodiment of the present disclosure.

FIG. 10 is a schematic diagram showing a cross-section of an alternativeexample of the touch display device according to the fifth embodiment ofthe present disclosure.

FIG. 11A is a schematic diagram showing a local top view of a touchdisplay device according to a sixth embodiment of the presentdisclosure.

FIG. 11B is a schematic diagram showing a cross-section of the touchdisplay device of FIG. 11A taken along a line II-II.

FIG. 11C is a schematic diagram showing a cross-section of analternative example of the touch display device according to the sixthembodiment of the present disclosure.

FIG. 12A is a schematic diagram showing a cross-section of analternative example of the touch display device of FIG. 11B.

FIG. 12B is a schematic diagram showing a cross-section of analternative example of the touch display device of FIG. 11C.

FIG. 13A is a schematic diagram showing a local top view of a touchdisplay device according to a seventh embodiment of the presentdisclosure.

FIG. 13B is a schematic diagram showing a cross-section of the touchdisplay device of FIG. 13A taken along a line III-III.

FIG. 14 is a schematic diagram showing a cross-section of an alternativeexample of the touch display device according to the seventh embodimentof the present disclosure.

FIG. 15 is a schematic diagram showing a cross-section of a furtheralternative example of the touch display device according to the seventhembodiment of the present disclosure.

FIG. 16A is a schematic diagram showing a local top view of a touchdisplay device according to an eighth embodiment of the presentdisclosure.

FIG. 16B is a schematic diagram showing a cross-section of the touchdisplay device of FIG. 16A taken along a line IV-IV.

FIG. 17 is a schematic diagram showing a cross-section of an alternativeexample of the touch display device according to the eighth embodimentof the present disclosure.

DESCRIPTION OF THE EMBODIMENTS

Reference will now be made in detail to the exemplary embodiments of thepresent disclosure, examples of which are illustrated in theaccompanying drawings. Wherever possible, the same reference numbers areused in the drawings and the descriptions to refer to the same or likeparts. In addition, the embodiments can be mutually combined, anddescriptions of the same or like concepts or processes are omitted insome embodiments.

In the disclosure of the present embodiment, the locution “an element Abeing located on an element B”, used to describe a positionalrelationship, encompasses the possibilities of one or multiple otherelements disposed between the element A and the element B, as well asthe case of no other elements existing between the element A and theelement B.

FIG. 1A is a schematic diagram showing a local top view of a touchdisplay device according to a first embodiment of the presentdisclosure. FIG. 1B is a schematic diagram showing a cross-section ofthe touch display device of FIG. 1A taken along a line I-I.

Referring to FIG. 1A and FIG. 1B at the same time, a touch displaydevice 100 includes a substrate 102, a light-emitting component 108, afirst insulating layer 110, a touch component 122 including a firsttouch part 148, and a touch signal transmission line 124 comprising afirst transmission part 126. In the present embodiment, the border of alight-emitting area of the light-emitting component 108 located closestto the edge of the substrate 102 can serve as a boundary between adisplay area 104 and a peripheral area 106 of the substrate 102. Thesubstrate 102 can be a flexible substrate or a rigid substrate. Thematerial of the flexible substrate may include, but is not limited to,plastic or glass. The material of the rigid substrate may include, butis not limited to, glass or silicon wafer. The light-emitting component108 is disposed on the display area 104. The first insulating layer 110is disposed on the display area 104 and the peripheral area 106, andcovers the light-emitting component 108. The first touch part 148 isdisposed on the first insulating layer 110, and at least a portion ofthe first touch part 148 is located on the display area 104. The firsttransmission part 126 is disposed on the first insulating layer 110 andis disposed on the peripheral area 106. The first transmission part 126is electrically connected with the first touch part 148, so as totransmit a signal of the first touch part 148 to an external device,e.g., a processing unit 10. As shown in FIG. 1A, the first transmissionpart 126 can be electrically connected with the processing unit 10 via abonding part 158 for transmitting signals. For example, the processingunit 10 can be an integrated circuit. According to some embodiments, thefirst transmission part 126 and the first touch part 148 may be made ofthe same material. For example, the first transmission part 126 and thefirst touch part 148 can be formed in the same process, i.e., formed bypatterning the same raw material layer. For example, the firsttransmission part 126 and the first touch part 148 can be of the samelayer.

The touch display device 100 can also include an active device array,disposed in the display area 104 of the substrate 102. The touch displaydevice 100 can also include a second insulating layer 163 disposedbetween the active device array and the light-emitting component 108 toseparate the active device array from the light-emitting component 108.The active device array may include, but is not limited to, at least onethin film transistor 132. An embodiment of the active device array mayinclude other components except the thin film transistor 132, such ascapacitors and transmission lines. In the present embodiment, the thinfilm transistor 132 is a component formed by a semiconductor layer 138,a gate G, a source S and a drain D. The gate G overlaps the channel area(not shown) of the semiconductor layer 138, and the source S and thedrain D contact different portions of the channel area of thesemiconductor layer 138. The gate G is formed by a first conductinglayer 134, and the source S and the drain D are formed by a secondconducting layer 136. The first conducting layer 134 is located betweenthe second conducting layer 136 and the substrate 102. The secondinsulating layer 163 is disposed between the thin film transistor 132and the light-emitting component 108. Specifically, the secondinsulating layer 163 is disposed between the first conducting layer 134of the thin film transistor 132 and the light-emitting component 108,and is disposed between the second conducting layer 136 of the thin filmtransistor 132 and the light-emitting component 108.

FIG. 1B exemplarily shows that the thin film transistor 132 is a thinfilm transistor with a bottom gate structure (i.e., the gate G islocated between the semiconductor layer 138 and the substrate 102).However, the semiconductor layer 138 may be located between the gate Gand the substrate 102 in an alternative embodiment, thus forming a thinfilm transistor with a top gate structure. The material of the firstconducting layer 134 or the second conducting layer 136 may be any knownmetal material suitable for manufacturing the active device array or aproper conducting material, and the descriptions thereof are omittedherein. It can be understood that the active device array includes atleast one metal component such as the gate or the source and the drain.Besides, in the thin film transistor 132, different metal components maybe separated by one or multiple dielectric layers, such as a firstdielectric layer 140 and a second dielectric layer 142 as shown in FIG.1B. The first dielectric layer 140 is located between the firstconducting layer 134 and the semiconductor layer 138, and the seconddielectric layer 142 is located between the second conducting layer 136and the semiconductor layer 138.

The light-emitting component 108 is disposed on the second insulatinglayer 163 that covers the active device array. In the presentembodiment, the area of the light-emitting component 108 can be definedby a pixel definition layer 164. The light-emitting component 108includes a first electrode 109, an opposite electrode 156, and alight-emitting layer 111. The light-emitting layer 111 is disposedbetween the opposite electrode 156 and the first electrode 109. Thelight-emitting component 108 may be driven by the active device array.Taking FIG. 1B as an example, the second conducting layer 136 in theactive device array may also include an electrode 168 used as connectionto the first electrode 109, and hence the first electrode 109 may beelectrically connected with the electrode 168 by a conductive connectionstructure 263 penetrating through the second insulating layer 163. Thefirst electrode 109, for example, may be an anode, and the oppositeelectrode 156, for example, may be a cathode. Alternatively, the firstelectrode 109 may be a cathode, and the opposite electrode 156 may be ananode. The light-emitting component 108, for example, may be an organiclight-emitting diode (OLED), a micro light-emitting diode (micro-LED) orthe like, but is not limited thereto.

In the present embodiment, the touch display device 100 may also includean opposite electrode wire 170, which, for example, can be formed by thesecond conducting layer 136, but is not limited thereto. Taking FIG. 1Bas an example, the opposite electrode 156 may be connected to theopposite electrode wire 170 formed by the second conducting layer 136through, for example, a conductive connection structure 272 and aconductive connection structure 172. The conductive connection structure272 is located in the pixel definition layer 164, and the conductiveconnection structure 172 is located in the second insulating layer 163.

The first insulating layer 110 covers the light-emitting component 108and the active device array, and may be configured for blocking waterand oxygen to protect the light-emitting component. The first insulatinglayer 110 may be formed in such a way that inorganic materials and/ororganic materials are alternately stacked to form a multi-layerstructure. The inorganic material includes, but is not limited to,Al₂O₃, SiN_(x) or SiO_(x). The organic material includes, but is notlimited to, an acrylic base material or a parylene base material. Aslong as the water and oxygen blocking effect of the first insulatinglayer 110 may be retained, the stacking sequence and the number oflayers of the inorganic material and the organic material are notspecially limited. In the present embodiment, the first insulating layer110 may include a first inorganic layer 112 and a second inorganic layer116 disposed on the first inorganic layer 112, but is not limitedthereto. In the display area 104 of the touch display device 100, thefirst insulating layer 110 may further include an organic layer 114,located between the first inorganic layer 112 and the second inorganiclayer 116. That is, the first inorganic layer 112 and the secondinorganic layer 116 are in direct contact with each other at theperipheral area 106, and are respectively located on the upper and lowersides of the organic layer 114 in the display area 104. Generallyspeaking, the organic layer 114 is relatively thick, and by arrangingthe edge of the organic layer 114 into a gentle slope structure, thewire breakage phenomenon of a subsequent layer at the edge of theorganic layer 114 may be effectively reduced.

The touch display device 100 may also include a second touch part 150and a third insulating layer 152. Particularly, as shown in FIG. 1A, thefirst touch part 148, the second touch part 150, and the thirdinsulating layer 152 may form the touch component 122. Similar to theabove-mentioned first touch part 148, the second touch part 150 may alsobe electrically connected with the processing unit 10 for transmittingsignals. The second touch part 150 may be electrically connected withthe processing unit 10 in a similar manner to that of the first touchpart 148, e.g. through a touch signal transmission line including atransmission part, and the descriptions thereof are omitted herein.

In the present embodiment, the touch display device may be amutual-capacitance type, the first touch part 148 may be a drivingelectrode for receiving a driving signal, and the second touch part 150may be a sensing electrode that passes a sensing signal back to theprocessing unit. Alternatively, the first touch part 148 may be asensing electrode, and the second touch part 150 may be a drivingelectrode. In other embodiments, the touch type of the touch displaydevice may also be of the self-capacitance type.

The first touch part 148 may include multiple first touch electrodes 147and multiple first connecting parts 149. The multiple first touchelectrodes 147 are arranged along a first direction x, and areelectrically connected with one another by the multiple first connectingparts 149. The second touch part 150 includes multiple second touchelectrodes 151 and multiple second connecting parts 153. The multiplesecond touch electrodes 151 are arranged along a second direction ydifferent from the first direction x (the first direction x and thesecond direction y, for example, are orthogonal to each other, but mayalso intersect each other in a non-orthogonal way). The multiple secondtouch electrodes 151 are electrically connected with one another by themultiple second connecting parts 153 (namely bridge BR). At least one ofthe multiple first connecting parts 149 crosses at least one of themultiple second connecting parts 153. In FIG. 1A, for illustration, onlyone first connecting part 149 and only one second connecting part 153are shown, and the first connecting part 149 crosses the secondconnecting part 153. Other first connecting parts 149 and other secondconnecting parts 153, which are not shown, may also cross each other.The third insulating layer 152 is disposed between the multiple firstconnecting parts 149 and the multiple second connecting parts 153, sothat the multiple first connecting parts 149 and the multiple secondconnecting parts 153 are electrically insulated from each other.According to some embodiments, the third insulating layer 152 mayinclude multiple island-like insulating structures, and each island-likeinsulating structure is located between the corresponding firstconnecting part 149 and second connecting part 153. For illustration,only one island-like insulating structure is shown in FIG. 1A and FIG.1B. The material of the first touch electrodes 147 and the second touchelectrodes 151 may be a transparent conducting material, a metal mesh,silver nanowires or carbon nanotubes. The transparent conductingmaterial includes, but is not limited to, ITO (indium tin oxide) orconductive polymers.

For illustration, only one touch part 148 and one second touch part 150are shown in FIG. 1A. A person skilled in the art can know that thetouch display device 100 may include multiple first touch parts 148 andmultiple second touch parts 150. The multiple first touch parts 148 maybe disposed in parallel, each one extending along the first direction x;the multiple second touch parts 150 can also be disposed in parallel,each extending along the second direction y, and the descriptionsthereof are omitted herein.

In a first embodiment of the present disclosure, as shown in FIG. 1B, atop bridge structure is exemplarily shown, i.e., the second connectingparts 153 are located above the first touch part 148. Moreover, thefirst connecting parts 149 and the first touch electrodes 147 may bemade of the same material or different materials, and the secondconnecting parts 153 and the second touch electrodes 151 may be made ofthe same material or different materials. For example, according to someembodiments, the first touch electrodes 147, the first connecting parts149, and the second touch electrodes 151 may be made of the samematerial and formed by the same manufacture process, and, for example,may be made of a transparent conducting material. The second connectingparts 153 may be made of metal and formed by another process, but arenot limited thereto. In other embodiments, the touch component 122 caninclude only one conducting material layer, that is, one layer solution.For example, the touch component 122 can be mutual capacitance sensingtype with a single touch layer, or is a self-capacitance sensing typewith a single touch layer.

In the present embodiment, the touch signal transmission line 124 mayinclude a first transmission part 126, a first conductive connectionstructure 130 and a second transmission part 128. The first conductiveconnection structure 130 can penetrate through the first insulatinglayer 110. According to some embodiments, the first transmission part126 may be made of the same material as the first conductive connectionstructure 130, and may also be made of the same material as the firsttouch part 148. The second transmission part 128 and the first electrode109 may be made of the same material, but are not limited thereto. Forexample, the first touch part 148, the first transmission part 126, andthe first conductive connection structure 130 may be formedsimultaneously by using the same material with the same manufactureprocedure. Namely, the first touch part 148, the first transmission part126, and the first conductive connection structure 130 may be formedsimultaneously by patterning the same raw material layer. For example,the first touch part 148, the first transmission part 126, and the firstconductive connection structure 130 may be of the same layer and made ofthe same material. According to some embodiments, the first transmissionpart 126 and the first conductive connection structure 130 may be madeby different materials and be formed by different processes. Forexample, the first transmission part 126 may be made of a transparentconducting layer (such as ITO), and the first conductive connectionstructure 130 may be made of metal.

According to some embodiments, the second transmission part 128 and thefirst electrode 109 may be formed simultaneously in the same process.Namely, the second transmission part 128 and the first electrode 109 maybe formed simultaneously by patterning the same raw material layer. Forexample, the second transmission part 128 and the first electrode 109may be of the same layer. The first transmission part 126 iselectrically connected to the first touch part 148. The firsttransmission part 126 is electrically connected with the secondtransmission part 128 via the first conductive connection structure 130.The touch signal transmission line 124 may also include the bonding part158. As shown in FIG. 1A, the bonding part 158 is located at the end ofthe touch signal transmission line 124, so that the first transmissionpart 126, the second transmission part 128, and the bonding part 158form a continuous transmission line. The bonding part 158 is located inthe peripheral area 106 to be connected with an external processing unit10. Therefore, the touch signal transmission line 124 may be used toconnect the touch component 122 with the external processing unit 10 fortransmitting a signal of the touch component 122 to the externalcomponent.

The touch display device 100 may include other layers or components suchas a buffer layer 166, a covering layer 160, and a cover plate 162 thatare exemplarily shown in FIG. 1B. The active device array, thelight-emitting component 108, the first insulating layer 110, the touchcomponent 122, and the first transmission part 126 are located betweenthe covering layer 160 and the substrate 102. The buffer layer 166 islocated between the active device array and the substrate 102, and thecovering layer 160 is located between the cover plate 162 and the touchcomponent 122. But the present disclosure is not limited thereto, andany other layers or modules commonly used in the touch display devicemay be used for the present disclosure. These layers or components maybe selectively disposed according to actual demands.

According to some embodiments, the first transmission part 126 and thefirst touch part 148 may be of the same layer, and may be formed by thesame process. The second transmission part 128 and the first electrode109 may be of the same layer (as shown in FIG. 1B), and may be formed bythe same process. Thus, signal transmission of the touch component 122can be realized without an additional metal trace fabrication.Consequently, the process of fabricating the touch display device may besimplified.

According to some embodiments, for example, when taking ITO as thematerial of the first transmission part 126, since the firsttransmission part 126 may be connected to the second transmission part128 of a metal material via the first conductive connection structure130. Thus, the overall impedance of the touch signal transmission line124 may be decreased, the transmission and feedback of touch signals maybe promoted, and touch efficacy may be effectively improved. Accordingto some embodiments, the patterning process for forming the secondtransmission part 128 of the metal material is performed before thefirst insulating layer 110 is formed. Thus, possible damage to the firstinsulating layer 110 due to patterning of the second transmission part128 may be avoided, and the water and oxygen blocking effect of thefirst insulating layer 110 may be retained. According to someembodiments, the first conductive connection structure 130 penetratesthrough an edge part 118 of the first inorganic layer 112 (the partextending outside the organic layer 114) and an edge part 120 of thesecond inorganic layer 116 (the part extending outside the organic layer114), but does not penetrate through the organic layer 114, thusachieving sufficient protection against infiltrations of water andoxygen.

FIG. 1C is a schematic diagram of an alternative example of the touchdisplay device, wherein micro light-emitting diodes serve as alight-emitting component 108 in a dotted frame C of FIG. 1B. As shown inFIG. 1C, each micro light-emitting diode 178 herein, for example, is alight-emitting diode chip of a micron level size. When the microlight-emitting diodes 178 serve as the light-emitting component, thethin film transistor 132 used to drive the micro light-emitting diodes178 may include a gate G (for example, formed by a first metal layer134), a semiconductor layer 138, a source S and a drain D (for example,the source and the drain are formed by a second metal layer 136). Thesemiconductor layer 138 and the gate G are separated from each other bya first dielectric layer 140, and the second insulating layer 163 coversthe thin film transistor 132 and may serve as a planarization layer. Inthe present embodiment, a dielectric layer 264 is disposed on the secondinsulating layer 163, and the dielectric layer 264 is provided with anopening to define an arrangement space of the micro light-emittingdiodes 178. Namely, the micro light-emitting diodes 178 may be disposedin the opening of the dielectric layer 264. A third metal layer 174 isdisposed on the second insulating layer 163, and is located in theopening of the dielectric layer 264, and the micro light-emitting diodes178 are bonded, for example, onto the third metal layer 174. The thirdmetal layer 174 may be electrically connected with the drain D by aconductive connection structure 176 penetrating through the secondinsulating layer 163. Besides, an insulating material 180 is furtherdisposed among the micro light-emitting diodes 178. An oppositeconducting layer 192 is disposed on the micro light-emitting diodes 178.When the design of the present embodiment is applied to the touchdisplay device in FIG. 1B, the first insulating layer 110 and the touchcomponent 122, for example, are disposed on the opposite conductinglayer 192, wherein the first insulating layer 110 and the touchcomponent 122 are only schematically shown in FIG. 1C, and the detaileddesign of these components may refer to the content above. Besides, thefirst insulating layer 110 may be a single-layer type insulating layer,and may also be a multi-layer type insulating layer. In other words, thefirst insulating layer 110 does not need to be limited to adopting astructure with stacking of one organic layer and one inorganic layer,and the first insulating layer 110 may also be formed by a singleinorganic layer or multiple inorganic layers.

FIG. 2 is a schematic diagram showing a cross-section of an alternativeexample of the touch display device according to the first embodiment ofthe present disclosure. A touch display device 200 is different from thetouch display device 100 of the first embodiment of the presentdisclosure in that the touch component 122 is of a bottom bridgestructure, i.e., the second connecting parts 153 are located below thefirst touch part 148, and are closer to the first insulating layer 110relative to the first touch part 148. The remaining structures of thetouch display device 200 may refer to the first embodiment above, andthe descriptions thereof are omitted herein.

FIG. 3A is a schematic diagram showing a cross-section of a touchdisplay device according to a second embodiment of the presentdisclosure. The basic structure of a touch display device 300 in FIG. 3Ais the same as the basic structure of the touch display device 100 inFIG. 1B, and the detailed descriptions thereof may refer to the firstembodiment above, unless otherwise stated. The touch display device 300can further include a second conductive connection structure 146penetrating through the second insulating layer 163 and a thirdtransmission part 144. The third transmission part 144 and the secondconducting layer 136 may be made of the same material, and the secondtransmission part 128 is electrically connected with the thirdtransmission part 144 via the second conductive connection structure146.

In the present embodiment, the third transmission part 144 is formed bythe second conducting layer 136 forming the source S and the drain D, sothat the third transmission part 144, the source S and the drain D maybe fabricated in the same process, and may be of the same layer.Moreover, the second insulating layer 163 is penetrated through by thesecond conductive connection structure 146, so that the secondtransmission part 128 is connected to the third transmission part 144 bythe second conductive connection structure 146. Besides, it can be knownfrom FIG. 3A that an area A1 of the projection of the first conductiveconnection structure 130 on the substrate 102 and an area A2 of theprojection of the second conductive connection structure 146 on thesubstrate 102 are separated from each other and do not overlap.Alternatively, in an embodiment in FIG. 3B, for example, the thirdtransmission part 144 may be formed by using the first metal layer 134forming the gate G, and the second conductive connection structure 146penetrates through the second insulating layer 163 and also penetratesthrough the dielectric layers 140 and 142. Or, in another embodiment inFIG. 3C, for example, a fourth transmission part 145 may be formed byusing the first metal layer 134 forming the gate G; a third conductiveconnection structure 155 penetrating through the dielectric layers 140and 142 is disposed, and the third transmission part 144 formed by thesecond conducting layer 136 can be connected to the fourth transmissionpart 145 by the third conductive connection structure 155. That is, thetouch signal transmission line 124 may include a transmission partformed by at least one of the first metal layer 134 and the second metallayer 136.

According to some embodiments, the second transmission part 128 and afirst electrode 109 of a light-emitting component may be of the samelayer, and the third transmission part 144 can be of same layer as thefirst or the second metal layer 134 or 136. In other embodiments, thethird transmission part 144 and the second metal layer 136 may be of thesame layer, and the fourth transmission part 145 and the first metallayer 134 may be of the same layer. Accordingly, signal transmission ofthe touch component 122 is realized without an additional metal tracefabrication. Consequently, the process may be simplified.

According to some embodiments, the transmission part for touch signaltransmission may be formed in the same layer of one electrode of thelight-emitting component or at least one conducting layer of the activedevice. Thus, after the process of fabricating the light-emittingcomponent, an additional process for forming a metal circuit connectinga signal of the touch component with the external component is notneeded. As a result, damage possibly caused to the light-emittingcomponent due to additional metal circuit fabrication may be avoided.According to some embodiments, the first touch part in the touchcomponent may be connected to the second transmission part or the thirdtransmission part made of a metal material by the touch signaltransmission line. By doing so, the overall impedance of the touchsignal transmission line may be decreased, the transmission and feedbackof touch signals may be promoted, and touch efficacy may be effectivelyimproved.

FIG. 4 is a schematic diagram showing a cross-section of an alternativeexample of the touch display device according to the second embodimentof the present disclosure. A touch display device 400 is different fromthe touch display device 300 of the second embodiment of the presentdisclosure in that the touch component 122 is of a bottom bridgestructure, i.e., the second connecting parts 153 are located below thefirst touch part 148. The remaining structures of the touch displaydevice 400 may refer to the second embodiment above, and thedescriptions thereof are omitted herein.

FIG. 5 is a schematic diagram showing a cross-section of a touch displaydevice according to a third embodiment of the present disclosure. Thebasic structure of a touch display device 500 in FIG. 5 is the same asthe basic structure of the touch display device 300 in FIG. 3A, and thedetailed description thereof may refer to the foregoing embodimentunless otherwise stated. In the touch display device 500, an area A1 ofthe projection of the first conductive connection structure 130 on thesubstrate 102 and an area A2 of the projection of the second conductiveconnection structure 146 on the substrate 102 are partially overlapped.

FIG. 6 is a schematic diagram showing a cross-section of an alternativeexample of the touch display device according to the third embodiment ofthe present disclosure. A touch display device 600 is different from thetouch display device 500 of the third embodiment of the presentdisclosure in that the touch component 122 is of a bottom bridgestructure, i.e., the second connecting parts 153 are located below thefirst touch part 148. The remaining structures of the touch displaydevice 600 may refer to the third embodiment above, and the descriptionsthereof are omitted herein.

FIG. 7 is a schematic diagram showing a cross-section of a touch displaydevice according to a fourth embodiment of the present disclosure. Thebasic structure of a touch display device 700 in FIG. 7 is the same asthe basic structure of the touch display device 300 in FIG. 3A, and thedetailed description thereof may refer to the second embodiment aboveunless otherwise stated. In the touch display device 700, the firsttransmission part 126 and the second connecting parts 153 can be of thesame layer, but the first transmission part 126 and the first touch part148 are different layers. Specifically, the first transmission part 126and multiple bridges (the second connecting parts 153) are formedsimultaneously by using the same material during the same process. Forexample, the first transmission part 126 and the second connecting parts153 are made of the same material. Because the touch component 122 inFIG. 7, for example, is of a top bridge structure, part of the firsttransmission part 126 may overlap with the touch part 148 toelectrically connect to the touch part 148. According to someembodiments, the second connecting parts 153, the first transmissionpart 126, and the first conductive connection structure 130 may beformed simultaneously by using the same material with the same process.For example, the second connecting parts 153, the first transmissionpart 126, and the first conductive connection structure 130 may be madeof the same material, and may be of the same layer.

FIG. 8 is a schematic diagram showing a cross-section of an alternativeexample of the touch display device according to the fourth embodimentof the present disclosure. A touch display device 800 is different fromthe touch display device 700 of the fourth embodiment of the presentdisclosure in that the touch component 122 is of a bottom bridgestructure, i.e., the second connecting parts 153 are located below thefirst touch part 148. Hence, part of the first touch part 148 overlapswith the first transmission part 126 to electrically connect the firsttransmission part 126. The remaining structures of the touch displaydevice 800 may refer to the fourth embodiment of the present disclosure,and the descriptions thereof are omitted herein.

FIG. 9 is a schematic diagram showing a cross-section of a touch displaydevice according to a fifth embodiment of the present disclosure. Thebasic structure of a touch display device 900 in FIG. 9 is the same asthe basic structure of the touch display device 300 in FIG. 3A, and thedetailed description thereof may refer to the second embodiment aboveunless otherwise stated. In the touch display device 900, the touchsignal transmission line 124 further includes an auxiliary transmissionline part 154. The auxiliary transmission line part 154 and the firsttransmission part 126 can be overlapped, and the auxiliary transmissionline part 154 and the second connecting part 153 can be of the samelayer and be made of the same material. By overlaying the auxiliarytransmission line part 154 on the first transmission part 126, not onlythe overall impedance of the touch signal transmission line 124 may belowered, but also an assistant structure to repair a possible linebreakage of part of the first transmission part 126 may be provided,thus improving process yield and promoting touch efficacy.

FIG. 10 is a schematic diagram showing a cross-section of an alternativeexample of the touch display device according to the fifth embodiment ofthe present disclosure. A touch display device 1000 in FIG. 10 is mainlydifferent from the touch display device 900 in FIG. 9 in that the touchcomponent 122 is of a bottom bridge structure (i.e., the secondconnecting parts 153 are located below the first touch part 148), andthe first transmission part 126 and the second connecting parts 153 canbe of the same layer. The basic structure of a touch display device 1000in FIG. 10 is the same as the basic structure of the touch displaydevice 800 in FIG. 8, and the detailed description thereof may refer tothe second embodiment above unless otherwise stated. In the touchdisplay device 1000, multiple bridges (second connecting parts 153) andthe first transmission part 126 can be formed during the same processbefore the first touch part 148 is formed, so that the first touch part148 stacks on the first transmission part 126, and covers the firsttransmission part 126.

FIG. 11A is a schematic diagram showing a local top view of a touchdisplay device according to a sixth embodiment of the presentdisclosure. FIG. 11B is a schematic diagram showing a cross-section ofthe touch display device of FIG. 11A taken along a line II-II. Referringto FIG. 11A and FIG. 11B at the same time, the basic structure of atouch display device 1100 is the same as the basic structure of thetouch display device 100 in FIG. 1B, and the detailed descriptionthereof may refer to the first embodiment above unless otherwise stated.In the touch display device 1100, the first transmission part 126 andthe second connecting parts 153 can be of the same layer. Specifically,the first transmission part 126 and multiple bridges (the secondconnecting parts 153) are formed simultaneously, and may be made of thesame material. Because the touch component 122 of the sixth embodimentof the present disclosure, for example, is of a top bridge structure,part of the first transmission part 126 overlaps with the first touchpart 148 to electrically connect to the first touch part 148. Besides,in the present embodiment, the first transmission part 126 may directlyserve as the touch signal transmission line 124 and extend to anexternal device, e.g., a processing unit 10. The first transmission part126 may be electrically connected to a processing unit 10 fortransmitting signals via a bonding part 158.

In the present embodiment, the touch type of the touch display device isa mutual-capacitance type, the first touch part 148 may be a drivingelectrode for receiving a driving signal, and the second touch part 150may be a sensing electrode for passing a sensing signal back to theprocessing unit. Alternatively, the first touch part 148 may be adriving electrode, and the second touch part 150 may be a sensingelectrode. In other embodiments, the touch type of the touch displaydevice may also be a self-capacitance type.

FIG. 11C is a schematic diagram showing a cross-section of analternative example of the touch display device according to the sixthembodiment of the present disclosure. A touch display device 1100′ isdifferent from the touch display device 1100 in that the touch component122 is of a bottom bridge structure, i.e., the second connecting parts153 are located below the first touch part 148. Hence, part of the firsttouch part 148 overlaps with the first transmission part 126 toelectrically connect to the first transmission part 126, and the firsttransmission part 126 may directly serve as the touch signaltransmission line 124 and extend to the bonding part 158. The remainingstructures of the touch display device 1100′ may refer to theaforementioned touch display device 1100, and the descriptions thereofare omitted herein.

FIG. 12A is a schematic diagram showing a cross-section of analternative example of the touch display device of FIG. 11B. The touchdisplay device 1200 in FIG. 12A further includes a second transmissionpart 128 of the same layer as the second conducting layer 136, and theend of the second transmission part 128 may be connected to the bondingpart 158. That is, the second transmission part 128, the source S, andthe drain D are formed during the same process. Here, the firstconductive connection structure 130 penetrates through the firstinorganic layer 112 and the second inorganic layer 116, and may alsopenetrate through the second insulating layer 163, so that the firsttransmission part 126 is connected to the second transmission part 128.The basic structure of a touch display device 1200 in FIG. 12A is thesame as the basic structure of the touch display device 1100, and thedetailed description thereof may refer to the touch display device 1100above unless otherwise stated.

FIG. 12B is a schematic diagram showing a cross-section of analternative example of the touch display device of FIG. 11C. A touchdisplay device 1200′ in FIG. 12B is different from the touch displaydevice 1200 in FIG. 12A in that the touch component 122 is of a bottombridge structure (i.e., the second connecting parts 153 are locatedbelow the first touch part 148). Compared with FIG. 11C, the touchdisplay device 1200′ in FIG. 12B further includes a second transmissionpart 128 of the same layer as the second conducting layer 136, and thebonding part 158 is connected to the end of the second transmission part128. The second transmission part 128, the source S, and the drain D areformed during the same process. Here, the first conductive connectionstructure 130 penetrates through the first inorganic layer 112 and thesecond inorganic layer 116, and may also penetrate through the secondinsulating layer 163, so that the first transmission part 126 isconnected to the second transmission part 128. The basic structure of atouch display device 1200′ in FIG. 12B is the same as the basicstructure of the touch display device 1100′, and the detaileddescriptions thereof may refer to the touch display device 1100′ aboveunless otherwise stated.

FIG. 13A is a schematic diagram showing a local top view of a touchdisplay device according to a seventh embodiment of the presentdisclosure. FIG. 13B is a schematic diagram showing a cross-section ofthe touch display device of FIG. 13A taken along a line III-III.

Referring to FIG. 13A and FIG. 13B at the same time, the basic structureof a touch display device 1300 in FIG. 13A and FIG. 13B is the same asthe basic structure of the touch display device 500 in FIG. 5, and thedetailed descriptions thereof may refer to the third embodiment aboveunless otherwise stated. In the touch display device 1300 in FIG. 13A,some but not all layers are exemplarily shown; in the touch displaydevice 1300 in FIG. 13B, the complete structure of the thin filmtransistor 132 is omitted, and only a thin film transistor layer 3000 isdrawn as a representative. The remaining structures of the thin filmtransistor 132 may refer to the foregoing embodiment. In the presentembodiment, the touch component 122, for example, is of a double indiumtin oxide (DITO) structure. A fourth insulating layer 254 is disposedbetween the first touch part 148 and the second touch part 150. Thefirst touch part 148, for example, extends along a first direction x;the second touch part 150, for example, extends along a second directiony, and the first direction x and the second direction y are different(the first direction x and the second direction y, for example, areorthogonal to each other, and may also intersect each other in anon-orthogonal way). The touch display device 1300 may include multiplefirst touch parts 148 and multiple second touch parts 150. The multiplefirst touch parts 148 are arranged along the second direction y, and themultiple second touch parts 150 are arranged along the first directionx. In the present embodiment, the touch type of the touch display deviceis a mutual-capacitance type; the first touch part 148 may be a drivingelectrode for receiving a driving signal, and the second touch part 150may be a sensing electrode for passing a sensing signal back to theprocessing unit. Alternatively, the first touch part 148 may be asensing electrode, and the second touch part 150 may be a drivingelectrode.

In the seventh embodiment of the present disclosure, the first inorganiclayer 112 and the second inorganic layer 116 have a taper structure in aposition at an edge of the first conductive connection structure 130 andaway from the display area 104. The first inorganic layer 112 and thesecond inorganic layer 116 partially cover the second transmission part128, and fluctuate along the profile of the second transmission part128. Consequently, the first transmission part 126 disposed on thesecond inorganic layer 116 may have a protruded surface corresponding tothe second transmission part 128.

FIG. 14 is a schematic diagram showing a cross-section of an alternativeexample of a touch display device according the seventh embodiment ofthe present disclosure. A touch display device 1400 is different fromthe touch display device 1300 of the seventh embodiment of the presentdisclosure in that the thickness of the first inorganic layer 112 andthe thickness of the second transmission part 128 are approximatelyequal, and the first inorganic layer 112 does not overlap with thesecond transmission part 128, so that the first inorganic layer 112 andthe second transmission part 128 form an approximately flat surface, andthe second inorganic layer 116 partially covers the second transmissionpart 128. Thus, the second inorganic layer 116 has no obviousfluctuation corresponding to the second transmission part 128, so thatthe first transmission part 126 has a flat surface outside the edge ofthe organic layer 114. The remaining structures of the touch displaydevice 1400 can refer to the seventh embodiment of the presentdisclosure, and the descriptions thereof are omitted herein.

FIG. 15 is a schematic diagram showing a cross-section of a furtheralternative example of the touch display device of the seventhembodiment of the present disclosure. A touch display device 1500 isdifferent from the touch display device 1300 of the seventh embodimentof the present disclosure in that the fourth insulating layer 254 doesnot cover the first transmission part 126. The remaining structures ofthe touch display device 1500 may refer to the seventh embodiment of thepresent disclosure, and the descriptions thereof are omitted herein.

FIG. 16A is a schematic diagram showing a local top view of a touchdisplay device according to an eighth embodiment of the presentdisclosure. FIG. 16B is a schematic diagram showing a cross-section ofthe touch display device of FIG. 16A taken along a line IV-IV.

Referring to FIG. 16A and FIG. 16B at the same time, the basic structureof a touch display device 1600 in FIG. 16A and FIG. 16B is the same asthe basic structure of the touch display device 500 in FIG. 5, and thedetailed descriptions thereof may refer to the third embodiment aboveunless otherwise stated. Besides, in the touch display device 1600, thecomplete structure of the thin film transistor 132 is omitted, and onlya thin film transistor layer 3000 is drawn as a representative. In thepresent embodiment, the touch component 122, for example, is a touchcomponent in a single-layer solution layer form, i.e., the touchcomponent 122 includes only one touch part, the first touch part 148. Inaddition, the first touch part 148 and the light-emitting layer 111 aredisposed in a staggered way, so the first touch part 148 does not coverthe light-emitting layer 111. In the present embodiment, the touch typeof the touch display device may be a self-capacitance type, and thefirst touch part 148 may receive a driving signal and pass a sensingsignal back to the processing unit.

FIG. 17 is a schematic diagram showing a cross-section of an alternativeexample of the touch display device according to the eighth embodimentof the present disclosure. A touch display device 1700 is different fromthe touch display device 1600 of the eighth embodiment of the presentdisclosure in that the first touch part 148 and the light-emitting layer111 are disposed in an overlapping way, i.e., the first touch part 148overlaps with and covers the light-emitting layer 111. The remainingstructures of the touch display device 1700 may refer to the eighthembodiment of the present disclosure, and the descriptions thereof areomitted herein.

Based on the foregoing, in the touch display device of the embodimentsof the present disclosure, the first insulating layer is disposed on thelight-emitting component, the first touch part and the firsttransmission part are disposed on the first insulating layer, and thefirst transmission part is electrically connected to the first touchpart and a processing unit for transmitting signals. According to someembodiments, the transmission parts of touch signal transmission lineson the peripheral area, the touch part, the conducting layer, or anelectrode on the display area can be part of the same layer, so that theprocess can be simplified.

Finally, it should be remarked that the foregoing embodiments are onlyused to illustrate, but not limit, the technical solutions of thepresent disclosure; although the present disclosure is demonstrated indetail with reference to the aforementioned embodiments, those skilledin the art should understand that various modifications still can bemade to the technical solutions recorded in the embodiments, orequivalent replacements can be made to parts or all of the technicalfeatures in the technical solutions; the nature of the correspondingtechnical solutions cannot be departed from the scope of the technicalsolutions of the embodiments of the present disclosure by thesemodifications or replacements.

What is claimed is:
 1. A touch display device, comprising: a substrateincluding a display area and a peripheral area; a light-emittingcomponent, disposed above the substrate and within the display area; afirst insulating layer, disposed above the light-emitting component anddisposed within the display area and the peripheral area; a touch part,disposed above the first insulating layer and within the display area; afirst transmission part, disposed above the substrate and within theperipheral area, wherein the first transmission part is electricallyconnected to the touch part; a first conductive connection structurepenetrating through the first insulating layer; a second transmissionpart, disposed below the first transmission part and within theperipheral area, wherein the first transmission part is electricallyconnected to the second transmission part via the first conductiveconnection structure; and a bonding part, connected to the secondtransmission part, wherein a portion of the second transmission partextends toward the peripheral area to form the bonding part.
 2. Thetouch display device according to claim 1, further comprising: a thinfilm transistor, electrically connected to the light-emitting componentand disposed above the substrate and within the display area, whereinthe thin film transistor has a source and a drain, and the source, thedrain and the second transmission part are of the same layer.
 3. Thetouch display device according to claim 1, further comprising: a thinfilm transistor, electrically connected to the light-emitting componentand disposed above the substrate and within the display area, whereinthe thin film transistor has a gate, and the gate and the secondtransmission part are of the same layer.
 4. The touch display deviceaccording to claim 1, further comprising: a conducting layer, disposedabove the substrate and within the display area; a second insulatinglayer, disposed between the conducting layer and the light-emittingcomponent; a second conductive connection structure, penetrating throughthe second insulating layer; and a third transmission part, made of thesame material as the conducting layer, wherein the second transmissionpart is electrically connected to the third transmission part via thesecond conductive connection structure; wherein a first through holepenetrates through the first insulating layer, the first conductiveconnection structure is disposed in the first through hole, a secondthrough hole penetrates through the second insulating layer, the secondconductive connection structure is disposed in the second through hole,and a projection of the first through hole on the substrate and aprojection of the second through hole on the substrate are partiallyoverlapped.
 5. The touch display device according to claim 1, whereinthe light-emitting component includes a light-emitting layer, the touchpart does not cover the light-emitting layer.
 6. The touch displaydevice according to claim 1, wherein the bonding part is connected tothe second transmission part, and the second transmission part and thebonding part are of the same layer.
 7. The touch display deviceaccording to claim 1, wherein the bonding part is connected to thesecond transmission part, and a width of the bonding part is greaterthan a width of the second transmission part.